Sheet-feeding device



Aug. M, E923., ll

* G. Spiess SHEET mamme Dsvxcs Filed. Jun@ 5.. awa

-..are driven from a-4 shaft mounted at the long .side vof the -table. andconneoted by; a`

driv-,ji Thisgly.

v:front 4end Vof the coni/"c 'ying y.table 4This problem` is: not solvedby this known device Y;

. tion of theta-ble the shaft at=tlie long side Patented iig.. lil, QZE.

um .sra

enone srrnss, opi Menzis-rinvenire, GERMANY.

' 1 sEEET-rrinmno DEVICE.

Application led .Tune 5,19%. Serial 1\1 o..5 6,5,9{)2.V

.LeipZig-Reudni'tz, Germany, have invented certain new andl usefuly improvements .in Slieetfifeedinff `Devices for which' lih'ave iiledwan. application in Germany on'the-Qth Y of-June, 1921), of which the following is a specication vTherehave alreadyubec'ome .known conH` -veying `tables for mechanicalsheet feeders which oscillable arcundia shaft ofthe stationary drive .for the devices arranged. l upon the table without. requiring the tloosen- A 4ing ofithe connection before theoscillating movement takes place.

.view the. devices arranged upon the table Apair of cog. wheels with the, stationary ing axle which serves as f pivot ein.

:ina asatisfactoryrnianneri as lat the-oscilla `vof the; tablemustexecute apart revolution .as its cog wheel rollsiupon` the` cogwheel.

of :the stationary shaft.` rlhis part-revolu-- tion of the intermediarywshaft causes a .movement offall the vdevices vonl;.the 4table.

which are connected with this shaft so. v,that kthe oscillating ofl thetableis much impeded so that `it can. be carried measure only. rThe conveying tables of vknown construction present further the inconvenience that the system olf-driving rods and levers for the device arranged at the. I other side ofzzthestabl'e, for instance the'.

drawing mark, must extend over the entire breadth of the table whereby the work to be done upon the table is rendered very diificult to execute.

According to this invention these ineenveniencies are avoided by operating the working tools mounted upon .the tablel directly from stationary driving elements through the intermediary of levers and by constructing the stationary driving device in such a manner that the link which connects the end member of the same with the working device arranged upon the tableV is situated in or approximately in the axis of VwWith this -obj ect .in

`oscillation. of the table. This construction can Tbe used. foiythe driving elementsfor any of .the devices mounted `yori-,thel table.

A `forni of construction cfa QOLVcyng ,table isshownby of example on the vaccompanying drawing in which, Vorder tamake Y.the dr-awing'lclearer only the driv- :elements for two working devices are shown rwhich Aare mounted upon the table.

rig. l lshows in', side elevationlthegfront .end of agsheet feederwith a conveyingtable v.in the workingposition.

lilig.l 2 is a similar view, the table being vsho'wnfin the lifted position.

l is thefranie of the sheetfeeder with :the fixed pile table 2 andthe conveying tablesA ,forfvthe mechanical feeding, which is adapted ,to oscillate about shaft 3., ln the .frame ofthe sheetfeeder ,grooyedzcani disk 5 is mounted. which is designed toopy erate. the registering; lmark vvarranged at the registering niarkserves to regulate ftheposi tion, of the sheetbefore the sanieis inserted into the machine. Therods for-ft"l 'nsinittingY the ,drive from disk 5' tothe-register- 'l Q .This lever lO-is. connected by a rod xll with a -leverA 12 hingedly mounted` upon by the resistance oered by thesedevices, table land designed tol transmit its moveout in a limited nient-.to the registering mark` by means -of `'other connecting elements notshowii ,on/:the

drawing. The two-armed leverll()fis-so, ar-

-ranged.that, at a determined position'goffthis lever, .thevfpivotlaxle 3 of the tablefllvcoin# cides exactly for* approximately 'y with @the pivot bolt 13 whih connects the lever'lU with connecting rod ll'. At the front 'end' of the conveying table a' device is further arranged which is designed to automatically stop the machine if the sheet is not throwing out of gear of the machine. 'The angle lever 17 is so arranged that its pivot bolt 2O which connects its upperarm with y the connecting rod 116, oscillated .by an 'oscillating axle of the conveying table and'k that the 'amplitudesto ,either side are 'ale most equal, so that, if lever 17 is at the middle position at the lifting of the table,

Y the'rods are not operated.

The amplitude of the oscillation varies according to the type of the machine. With machines having a greater amplitude of oscillation if the conveying table would `VV`be rlifted for instance at the extreme position of the lever 17 or v10, a movement will be produced in the rods which could lead. to disturbances in or to rupture of parts of the a machine." This is prevented'by a safety device which permits the oscillation o-f the conveying table only at thenormal position Vof all the elements for the transmission of movemment, for instance if thepivot pins which connect the connecting rods of the devices mounted upon the table with the rod-levers "pivoted at fixed points, are exactly or approximately at the middle of the path of oscillation which means that" they coincide t lifting onlyif the lockingy ofthe table' has-l fbeen re'leasedby the normal position of the rods. With large tables a lifting device is used which'refmains locked, as longas the rods have not yet adoptedV the normal position. Such'a lockingdevice is'shown on the with the pivot axle 3 of the table.v With small tables,which are to be lifted by hand, locking means are provided which permit the drawing.v i 'i j Y The locking and unlocking is controlled in sucha 'manner that at the unlockingY of, the

' winch all the rods are at the normal position. 'The lever '7 Vis best adapted for'this purpose. It is'connected with an angle lever QQby a rod 21, said angle lever being iconnected by a rod 23 with a locking arm 24.

This lockingrarm 24 engages with its`nose 'in a ratchet wheel 25' mounted'upon the shaft' of thev crank handle of the winch. lIf

Vvthe Ylower arm of lever 7 is inthe extreme left hand side position'the locking `nose ofV lever 20 is disengaged from the teeth of the ratchet wheel and the conveying table can be swung up. l Iclaim: l 1. An improvedA oscillableconveying table fori fthe' mechanical feeding ofi sheets Vin similar machines comprising in combination with theconveying'table and with the :working devices mounted uponA the same, a

-can be lifted without the priorlowering ofl the connection between the working devices mounted upon the same and the driving rods fixed to the stationary parts of the machine. 2. An improved oscillable conveying table Vfor the mechanical feeding of sheetsv inl hprinting machines, folding machines and similar machines comprising `in 'combination with the conveying-.table and with the working devices mounted upon the same, a driving shaft, stationary rods forv transmitting the movement from'` said Ydriving shaftV toV the said working'devices,.operatingfzrods of Y ysaid working devices, links-connecting saidl stationary rods with said movable rods,

pivot bolts for said links,"theqlink' being ,ar-

ranged soth'at their. pivot bolts arefsirtuated in or approximately in .thepivotingfaxisof the conveying table so.v that saidtable, 'can be. 'liftedwithout the prior loweringof the con- `nectionlbetween;the working devices mount-1 eclupon the same andthe driving rods fixed tothe stationaryparts ofthe machina-and a locking device forlocking the table as', long as the operatingrods are not in thenormal* position; Y 5 Y In testimony whereof I aflix my signature in presenceoftwo witnesses.. f

enonefsrinss. U

yVitnesses: .f s n W EMORY H. LORD,VV-v RAYMOND J. KEvAsIoIK.

printing machines, folding machines and 

